Analysis

  • max time kernel
    42s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 10:47

General

  • Target

    5e20e4083063c139382c5df8d39dd47d30e86679a6bdfe55d5e7fee60038a0da.exe

  • Size

    776KB

  • MD5

    816427c8125ca5cb22fcedcc01cc567c

  • SHA1

    3321b55cf834540be904fe1cc41b1bbf2240a0df

  • SHA256

    5e20e4083063c139382c5df8d39dd47d30e86679a6bdfe55d5e7fee60038a0da

  • SHA512

    f6ce220a45c485ef2980002f38c54c5b13f06a96b6fa4f9af5fa1125c3c7548c7b23145f1cf78f59e731c0ff9dd67e06741d8cb8dd4cf4796b155fa03efa1836

  • SSDEEP

    12288:43TdtLW5WIj1YSSdFxQBSXyMzBUWb9lx/9AHHLo8OW+rBXSsP:SDsj1dEgBcJ9nPx/iHrp+9So

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 10 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5e20e4083063c139382c5df8d39dd47d30e86679a6bdfe55d5e7fee60038a0da.exe
    "C:\Users\Admin\AppData\Local\Temp\5e20e4083063c139382c5df8d39dd47d30e86679a6bdfe55d5e7fee60038a0da.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1132
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:1524
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1656
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\svchost .exe
          3⤵
            PID:1416

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/1132-54-0x0000000075561000-0x0000000075563000-memory.dmp

              Filesize

              8KB

            • memory/1132-57-0x0000000000400000-0x00000000004E8000-memory.dmp

              Filesize

              928KB

            • memory/1132-62-0x0000000000400000-0x00000000004E8000-memory.dmp

              Filesize

              928KB